Select "CODE_N7000XXLC1_ROOT_DEODEX_BL.tar.md5" for "System" and "Hidden" as image above.

Un-check "Enable EverRoot" since you already rooted and CWM.
**Maybe we need to check it to keep CWM. Haven't tested.

5. Click [Flash firmware]. System will restart and DEODEX XXLC1 will be installed.
6. DONE

You are DEODEX XXLC1.

How to make sure I'm DEODEX?

You don't have .ODEX file inside you "System/App" folder.

PRO and CONS

DEODEX lets you to modify the system, especially THEME
Developers most of the time choose DEODEX rom for their custom rom
DEODEX will allow you to modify APK file

ODEX files quickly build dalvik cache. Shorter boot time
DEODEX take longer time for the first time boot time. Not after that
DEODEX you could patch your RTL. Mean you could read ARABIC on GNote

For a casual user like me, the main implication is in theming possibilities. Themes for android come in APKs too, and if you want to modify any of those, you should always choose a dedoexed custom ROM.